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US 4,302,650 AGranted
Circuit interrupter with optical indicator
AssigneeWestinghouse Electric Corp.
InventorsKurt A. Grunert, John J. Henwood, Birch L. DeVault
Life of this patent
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AssigneeWestinghouse Electric Corp.
InventorsKurt A. Grunert, John J. Henwood, Birch L. DeVault
Estimating the term…
A circuit interrupter with an optical indicator characterized by a housing, a stationary contact structure within the housing, a movable contact carrier structure within the housing and movable between open and closed positions relative to the stationary contact carrier, said carrier structure also being movable between remote and proximate positions of the lens, indicator means for observing the position of said carrier structure and including a lens in the housing and directed to said carrier structure, indicia on the surface of said carrier structure facing the lens and having two indicia portions, and the lens showing different indicia portions when the carrier structure is in remote and proximate positions, thereby indicating to an observer whether the circuit interrupter is in the open or closed circuit condition.
A circuit interrupter comprising a housing, a stationary contact structure within the housing, a movable contact carrier structure within the housing and movable between open and closed positions relative to the stationary contact structure, indicator means for observing the position of said carrier structure and including a lens in the housing and directed to said carrier structure, said carrier structure when moved being movable between remote and proximate positions of the lens, indicia on a surface of said carrier structure facing the lens and having two indicia portions, one indicia portion being observable through the lens when said carrier structure is in the remove position, and the other indicia portion being observable when the carrier structure is in proximate positions.
Dependencies are inferred from the claim text.